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Steel khvg

Designation

Name The value
Designation GOST Cyrillic ХВГ
Designation GOST Latin XBG
Transliteration HVG
The chemical elements CrWMn

Description

Khvg steel is used: for the manufacture measuring and cutting tools, for which an increased shrinkage during hardening is unacceptable, threaded gauges, broaches, long tap, long reamers, dies and other special tools, cold heading dies and punches, tooling.

Standards

Name Code Standards
Sectional and shaped rolling В22 GOST 1133-71, GOST 2590-2006, GOST 2591-2006
Sheets and stripes В33 GOST 4405-75, TU 14-131-971-2001
Sectional and shaped rolling В32 GOST 5950-2000, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 14955-77, TU 14-1-734-73, TU 14-11-245-88
Bulls. Blanks. Slabs В31 OST 24.952.01-89

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu V Ti Mo W
GOST 5950-2000 0.9-1.05 ≤0.03 ≤0.03 0.8-1.1 0.9-1.2 0.1-0.4 ≤0.4 The rest ≤0.3 ≤0.15 ≤0.03 ≤0.2 1.2-1.6
Fe is the basis.

Physical characteristics

Temperature r, кг/м3 R, НОм · м a, 10-6 1/°С
20 7850 380 -
100 7830 - 11
300 7760 - 13
600 7660 - 14
200 - - 12
400 - - 135
500 - - 14
800 - - 145

A description of the physical symbols

Name Description
r Density
R UD. the resistivity
a The coefficient of linear expansion

Technological properties

Name The value
Weldability Does not apply to welded structures.
Propensity to temper brittleness Malosolone.
Forging temperature Beginning - 1070 °C, the end - 860 °C. the Cooling is slow.
Flock-sensitive sensitivity Sensitive.
Workability by cutting In hot-rolled condition, when blower SB 235 HB=760 MPa Kn TV.SPL.=A 0.75 Kn b.St.=0,35.
Grindability With a hardness of HRC 59-61 reduced; at the HRC 55-57 - satisfactory.

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